中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2014年
6期
734-738
,共5页
柳誉剑%王新海%杜志华%何敏%周斌%廖春
柳譽劍%王新海%杜誌華%何敏%週斌%廖春
류예검%왕신해%두지화%하민%주빈%료춘
油气田开发工程%水驱特征曲线%含水饱和度%含水率%累积产液量%地质储量
油氣田開髮工程%水驅特徵麯線%含水飽和度%含水率%纍積產液量%地質儲量
유기전개발공정%수구특정곡선%함수포화도%함수솔%루적산액량%지질저량
oil-gas field development engineering%water flooding characteristic curve%water saturation%water cut%cumulative liquid production%geological reserves
以中含水阶段油水相对渗透率比与含水饱和度成半对数直线关系为基础,结合贝克莱-列维尔特等饱和度面移动方程,利用物质平衡原理,推导出一种含水率与累积产液量关系的水驱特征曲线。剖析了该曲线特征,阐述了新型水驱特征曲线先减后增主要是由含水率对含水饱和度导数的多值性造成的,并且通过理论证明应该在含水率大于50%以后寻找水驱特征曲线的直线段,与传统经验认识相一致,同时提出如何合理选取线性回归起始点以提高预测精度。实例证明,该水驱特征曲线对于油田生产开发指标预测具有一定的实用性。
以中含水階段油水相對滲透率比與含水飽和度成半對數直線關繫為基礎,結閤貝剋萊-列維爾特等飽和度麵移動方程,利用物質平衡原理,推導齣一種含水率與纍積產液量關繫的水驅特徵麯線。剖析瞭該麯線特徵,闡述瞭新型水驅特徵麯線先減後增主要是由含水率對含水飽和度導數的多值性造成的,併且通過理論證明應該在含水率大于50%以後尋找水驅特徵麯線的直線段,與傳統經驗認識相一緻,同時提齣如何閤理選取線性迴歸起始點以提高預測精度。實例證明,該水驅特徵麯線對于油田生產開髮指標預測具有一定的實用性。
이중함수계단유수상대삼투솔비여함수포화도성반대수직선관계위기출,결합패극래-렬유이특등포화도면이동방정,이용물질평형원리,추도출일충함수솔여루적산액량관계적수구특정곡선。부석료해곡선특정,천술료신형수구특정곡선선감후증주요시유함수솔대함수포화도도수적다치성조성적,병차통과이론증명응해재함수솔대우50%이후심조수구특정곡선적직선단,여전통경험인식상일치,동시제출여하합리선취선성회귀기시점이제고예측정도。실예증명,해수구특정곡선대우유전생산개발지표예측구유일정적실용성。
Based on the semi-logarithmic linear relationship between oil-water relative permeability ratio in medium water-bearing period and water saturation,a new kind of water-drive characteristic curve including water cut and cumulative liquid production was derived using isosaturation surface moving equation proposed by Buckley-Leverett and material balance principle.By analy-zing the characteristics of the curve,the reason why the water-drive characteristic curve trend reduced at first and then increased later is due to the multiple values of water cut derivative on water saturation.The conclusion that the linear part of water-drive characteristic curve should be looked for after water cut is greater than 50%,which is consistent with the traditional experience. At the same time,the method of how to choose the start point of linear regression to increase the prediction accuracy was also proposed.The calculation results of actual example indicate that the new kind of water-drive characteristic curve has a certain practicability for the prediction of oil field production and development indices.